The United States had one-tenth as many pub quizzes as Great Britain a few years ago so John Dicker and Joel Peach co-founded Geeks Who Drink. Ten years later, the Denver-based organization’s team of writers led by a six-time “Jeopardy” champion supplies quizzes to more than 600 pubs and restaurants in 35 states.

Geeks Who Drink has made bars more fun for thousands of Americans and has helped hundreds of bars boost their business. Here is the bars’ schedule of quizzes. A quiz consists of eight rounds of eight questions each. Three of the rounds are on specific topics. One is on general knowledge. One is a multiple choice or speed round. The other three rounds are based on identifying songs, audios of movies and television shows, and photos on a printed handout. Here is part of a sample quiz.

Teams of up to six people compete against each other in these contests. Geeks Who Drink estimates that it takes one to six months to build a crowd and venues with contests sell three to 10 times more food and drinks on contest nights.

Winning teams receive price discounts and prizes, but they don’t compare to what they can win if they participate in the Geek Bowl. This year’s Geek Bowl — Geek Bowl X — is in Denver on Saturday, Feb. 20. It will award nearly $20,000 to the top five teams. Past Geek Bowls have attracted more than 1,000 people.

Purplepass sells tickets to Geek Bowl players and spectators at this website.